Interchangeability

Interchangeability can refer to:

Interchangeability (telecommunication): A condition in which exsist two or more items with characteristics making them equivalent in performance and durability, making them fully exchangeable.
Interchangeability (computer science): The ability that an object can be replaced by another object without affecting code using the object.
Interchangeable parts: In mechanical engineering, the ability to select components for assembly at random and fit them together within proper tolerances.